Diffusion may be avoided if the hypermagnetic field is strong enough to trigger a turbulent evolution of the thermal plasma before diffusion processes reach the relevant scales [1]}, [2]}, [3]}.
This requires an initial magnetic Reynolds number much larger than unity,\(9\endcsname \)In the cascade regime, the magnetic Reynolds number increases monotonically.
A large initial value is therefore sufficient to ensure a turbulent regime throughout the subsequent evolution [4]}.

such that magnetic induction dominates over diffusion,
\(\textrm {Re}_{\rm mag}^{\rm ini} = \left.\frac{\sigma _{\rm th} v c_\lambda }{H}\right|_{\rm end} \,.\) 
